On Wed, 2005-03-30 at 16:28, Stephen Hemminger wrote:

This patch cleans up the netif_rx and related code in the network
receive core.

     - Eliminate vestiges of fastroute.
       The leftover statistics no longer needed.

     - Get rid of high/med/low threshold return from netif_rx.
       Drivers rarely check return value of netif_rx, and those
       that do can handle the DROP vs SUCCESS return

Please leave this feature in. Drivers that used it have moved on to a
better life under NAPI; however, it is still useful for anyone who wants
to take  heed of congestion. And infact it is highly advisable for
anyone not using NAPI to using it.
In other words: the work should be to convert users of netif_rx and not
to get rid of this feature.

     - Remove dead code for RAND_LINE and OFFLINE_SAMPLE

OFLINE SAMPLE can go. The other refer to my comments above.

     - Get rid of weight_p since setting sysctl has no effect.
       Increase default weight of netif_rx path because it can receive
       packets from multiple devices and loopback.

Same here.

     - Separate out max packets per softirq vs. max queued packets.
       Today, netdev_max_burst is used for both. Add new parameter
       that is for the per-cpu max queued packets.

     - Increase queue defaults to meet modern CPU speeds.
       Make max_backlog be about 1ms, and max_queue be about 10ms

kind of hard to compute what 1 or 10 ms in packet count. But probably
justfied to make the default larger. 

     - Switch to pure drop tail when queue fills.
       Better for TCP performance under load to drop a few packets
       then go into full discard mode.

Like discussed in that thread with person who enhanced the SACK queue
traversal that for a serious use a TCP user really oughta migrate to a
NAPI driver. 

cheers,
jamal